mineral

Blue Apatite

Fluoroapatite (Ca5(PO4)3F)

Hardness: 5 (Mohs scale), Color: Teal blue to deep blue-green, Luster: Vitreous to sub-resinous, Crystal Structure: Hexagonal, Cleavage: Poor/Indistinct, Specific Gravity: 3.1-3.2

Identified April 13, 2026More mineral →

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Physical properties

Hardness: 5 (Mohs scale), Color: Teal blue to deep blue-green, Luster: Vitreous to sub-resinous, Crystal Structure: Hexagonal, Cleavage: Poor/Indistinct, Specific Gravity: 3.1-3.2

Formation & geological history

Formed in igneous pegmatites, metamorphic rocks (limestones and marbles), and occasionally sedimentary phosphorites. It is often found in Madagascar and Brazil.

Uses & applications

Used primarily as a source of phosphorus for fertilizer. High-quality specimens are used as gemstones and in metaphysical crystal collections.

Geological facts

Apatite is the specific mineral that makes up the hydroxyapatite in human teeth and bone. It is often confused with other minerals like tourmaline or beryl because of its wide range of colors.

Field identification & locations

Identify in the field by its distinct teal color and its hardness; it can be scratched by a steel knife (hardness 5.5). Common locations include Madagascar, Mexico, and Canada.